如果“人”的名稱以字母“a”開頭，我想刪除一個(gè)選擇選項(xiàng)：基本上，如果People.nome或（Animal.pessoa）以字母“A”開頭，我想把選擇（2，“GATO”）去掉。from django.db import modelsfrom django.core.validators import RegexValidatorclass People(models.Model): nome = models.CharField(max_length=200) birthday_date = models.DateField() cpf = models.CharField(max_length=11, validators=[RegexValidator(r'^\d{1,10}$')]) def __str__(self): return '%s' % (self.nome)def cant_have_cat(self): field_choices = [ (1, 'CACHORRO'), (2, 'GATO'), (3, 'OUTRO'), ] self.maiusculo = self.pessoa.upper if self.maiusculo[0] == 'A': self.tipo != 2 return field_choicesclass Animal(models.Model): pessoa = models.ForeignKey(People, on_delete=models.CASCADE) name = models.CharField(max_length=100) tipo = models.IntegerField(choices=cant_have_cat) custo = models.DecimalField(max_digits=7, decimal_places=2) def __str__(self): return '%s %s' % (self.pessoa, self.name)forms.pyclass AnimalForm(forms.ModelForm): field_choices = [ (1, 'CACHORRO'), (2, 'GATO'), (3, 'OUTRO'), ] name = forms.CharField(max_length=100) tipo = forms.ChoiceField(choices=field_choices) custo = forms.DecimalField(max_digits=7, decimal_places=2) class Meta: prefix = 'animal' model = Animal fields = ('name', 'tipo', 'custo') def clean(self): people_name = self.People.nome upper = people_name.upper() if upper[0] == 'A': Animal.tipo != 2
1 回答
白衣染霜花
TA貢獻(xiàn)1796條經(jīng)驗(yàn) 獲得超10個(gè)贊
您可以覆蓋 您的 來處理邏輯。像這樣：__init__AnimalForm
class AnimalForm(forms.ModelForm):
field_choices = [
(1, 'CACHORRO'),
(2, 'GATO'),
(3, 'OUTRO'),
]
field_choices_subset = [
(1, 'CACHORRO'),
(3, 'OUTRO'),
]
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
if kwargs.get("instance") and kwargs.get("instance").pessoa.nome.startswith("a"):
self.fields["tipo"].choices = field_choices_subset
name = forms.CharField(max_length=100)
tipo = forms.ChoiceField(choices=field_choices)
custo = forms.DecimalField(max_digits=7, decimal_places=2)
class Meta:
prefix = 'animal'
model = Animal
fields = ('name', 'tipo', 'custo')
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